Insemination in the context of "Mating"

Fertilisation or fertilization (see spelling differences), also known as generative fertilisation, syngamy and impregnation, is the fusion of gametes to give rise to a zygote and initiate its development into a new individual organism or offspring. While processes such as insemination or pollination, which happen before the fusion of gametes, are also sometimes informally referred to as fertilisation, these are technically separate processes. The cycle of fertilisation and development of new individuals is called sexual reproduction. During double fertilisation in angiosperms, the haploid male gamete combines with two haploid polar nuclei to form a triploid primary endosperm nucleus by the process of vegetative fertilisation.

Surrogacy is an arrangement whereby a woman gets pregnant and gives birth on behalf of another person or couple who will become the child's legal parents after birth. People pursue surrogacy for a variety of reasons such as infertility, dangers or undesirable factors of pregnancy, or when pregnancy is a medical impossibility. Surrogacy is highly controversial and only legal in twelve countries.

A surrogacy relationship or legal agreement contains the person who carries the pregnancy and gives birth and the person or persons who take custody of the child after birth. The person giving birth is the gestational carrier, sometimes referred to as the birth mother, surrogate mother or surrogate. Those taking custody are called the commissioning or intended parents. The biological mother may be the surrogate or the intended parent or neither. Gestational carriers are usually introduced to intended parents through third-party agencies, or other matching channels. They are usually required to participate in processes of insemination (no matter traditional or IVF), pregnancy, and delivery.

Coitus interruptus, also known as withdrawal, pulling out or the pull-out method, is an act of birth control during sexual intercourse, whereby the penis is withdrawn from a vagina prior to ejaculation so that the ejaculate (semen) may be directed away in an effort to avoid insemination.

This method was used by an estimated 38 million couples worldwide in 1991. Coitus interruptus does not protect against sexually transmitted infections (STIs).

External fertilization is a mode of reproduction in which a male organism's sperm fertilizes a female organism's egg outside of the female's body.It is contrasted with internal fertilization, in which sperm are introduced via insemination and then combine with an egg inside the body of a female organism.

In animals, external fertilization typically occurs in water or a moist area to facilitate the movement of sperm to the egg. The release of eggs and sperm into the water is known as spawning. In motile species, spawning females often travel to a suitable location to release their eggs. However, sessile species are less able to move to spawning locations and must release gametes locally. Among vertebrates, external fertilization is most common in amphibians and fish. Invertebrates utilizing external fertilization are mostly benthic, sessile, or both, including animals such as coral, sea anemones, and tube-dwelling polychaetes. Benthic marine plants also reproduce through external fertilization. Environmental factors and timing are key challenges to the success of external fertilization. While in the water, the male and female must both release gametes at similar times in order to fertilize the egg. Gametes spawned into the water may also be washed away, eaten, or damaged by external factors.